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Ultrabroadband 50-130 THz pulses generated via phase-matched difference frequency mixing in LiIO₃

Zentgraf, T. ; Huber, Rupert ; Nielsen, N. C. ; Chemla, D. S. ; Kaindl, R.
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Date of publication of this fulltext: 31 Jan 2011 12:47


We report the generation of ultrabroadband pulses spanning the 50-130 THz frequency range via phase-matched difference frequency mixing within the broad spectrum of sub-10 fs pulses in LiIO3. Model calculations reproduce the octave-spanning spectra and predict few-cycle THz pulse durations less than 20 fs. The broad applicability of this scheme is demonstrated with 9-fs pulses from a Ti:sapphire oscillator and with 7-fs amplified pulses from a hollow fiber compressor as pump sources.

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